#[[ When increasing the minimum required version, check if Boost_ADDITIONAL_VERSIONS
    in CMake/PackageDepends/MITK_Boost_Config.cmake can be removed. See the first
    long comment in CMakeExternals/Boost.cmake for details. ]]

set(MITK_CMAKE_MINIMUM_REQUIRED_VERSION 3.18)
cmake_minimum_required(VERSION ${MITK_CMAKE_MINIMUM_REQUIRED_VERSION})

if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.19 AND CMAKE_VERSION VERSION_LESS 3.19.2)
  message(FATAL_ERROR "\
CMake v${CMAKE_VERSION} is defective [1]. \
Please either downgrade to v3.18 or upgrade to at least v3.19.2.\n\
[1] https://gitlab.kitware.com/cmake/cmake/-/issues/21529")
endif()

#-----------------------------------------------------------------------------
# Policies
#-----------------------------------------------------------------------------

#[[ T28060

    https://cmake.org/cmake/help/v3.18/policy/CMP0091.html
    https://cmake.org/cmake/help/v3.18/variable/CMAKE_MSVC_RUNTIME_LIBRARY.html

    We pass CMP0091 to all external projects as command-line argument:
      -DCMAKE_POLICY_DEFAULT_CMP0091:STRING=OLD
 ]]
cmake_policy(SET CMP0091 OLD)

#-----------------------------------------------------------------------------
# Superbuild Option - Enabled by default
#-----------------------------------------------------------------------------

option(MITK_USE_SUPERBUILD "Build MITK and the projects it depends on via SuperBuild.cmake." ON)

if(MITK_USE_SUPERBUILD)
  project(MITK-superbuild)
  set(MITK_SOURCE_DIR ${PROJECT_SOURCE_DIR})
  set(MITK_BINARY_DIR ${PROJECT_BINARY_DIR})
else()
  project(MITK VERSION 2021.10.99)
  include_directories(SYSTEM ${MITK_SUPERBUILD_BINARY_DIR})
endif()

#-----------------------------------------------------------------------------
# MITK Extension Feature
#-----------------------------------------------------------------------------

set(MITK_EXTENSION_DIRS "" CACHE STRING "")

unset(MITK_ABSOLUTE_EXTENSION_DIRS)

foreach(MITK_EXTENSION_DIR ${MITK_EXTENSION_DIRS})
  get_filename_component(MITK_ABSOLUTE_EXTENSION_DIR "${MITK_EXTENSION_DIR}" ABSOLUTE)
  list(APPEND MITK_ABSOLUTE_EXTENSION_DIRS "${MITK_ABSOLUTE_EXTENSION_DIR}")
endforeach()

set(MITK_DIR_PLUS_EXTENSION_DIRS "${MITK_SOURCE_DIR}" ${MITK_ABSOLUTE_EXTENSION_DIRS})

#-----------------------------------------------------------------------------
# Update CMake module path
#-----------------------------------------------------------------------------

set(MITK_CMAKE_DIR ${MITK_SOURCE_DIR}/CMake)

set(CMAKE_MODULE_PATH ${MITK_CMAKE_DIR})

foreach(MITK_EXTENSION_DIR ${MITK_ABSOLUTE_EXTENSION_DIRS})
  set(MITK_CMAKE_EXTENSION_DIR "${MITK_EXTENSION_DIR}/CMake")
  if(EXISTS "${MITK_CMAKE_EXTENSION_DIR}")
    list(APPEND CMAKE_MODULE_PATH "${MITK_CMAKE_EXTENSION_DIR}")
  endif()
endforeach()

#-----------------------------------------------------------------------------
# CMake function(s) and macro(s)
#-----------------------------------------------------------------------------

# Standard CMake macros
include(FeatureSummary)
include(CTest)
include(CMakeParseArguments)
include(FindPackageHandleStandardArgs)

# MITK macros
include(mitkFunctionGetGccVersion)
include(mitkFunctionCheckCompilerFlags)
include(mitkFunctionSuppressWarnings) # includes several functions
include(mitkMacroEmptyExternalProject)
include(mitkFunctionEnableBuildConfiguration)
include(mitkFunctionWhitelists)
include(mitkFunctionAddExternalProject)
include(mitkFunctionAddLibrarySearchPaths)

SUPPRESS_VC_DEPRECATED_WARNINGS()

#-----------------------------------------------------------------------------
# Set a default build type if none was specified
#-----------------------------------------------------------------------------

if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
  message(STATUS "Setting build type to 'Debug' as none was specified.")
  set(CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the type of build." FORCE)

  # Set the possible values of build type for cmake-gui
  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY
               STRINGS "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
endif()

#-----------------------------------------------------------------------------
# Check miminum macOS version
#-----------------------------------------------------------------------------
# The minimum supported macOS version is 10.14. If you use a version less than
# 10.14, there is no guarantee that the build still works.
if(APPLE)
  exec_program(sw_vers ARGS -productVersion OUTPUT_VARIABLE macos_version)
  if (macos_version VERSION_LESS "10.14")
    message(WARNING "Detected macOS version \"${macos_version}\" is not supported anymore. Minimum required macOS version is at least 10.14.")
  endif()
  if (CMAKE_OSX_DEPLOYMENT_TARGET AND CMAKE_OSX_DEPLOYMENT_TARGET VERSION_LESS 10.14)
    message(WARNING "Detected macOS deployment target \"${CMAKE_OSX_DEPLOYMENT_TARGET}\" is not supported anymore. Minimum required macOS version is at least 10.14.")
  endif()
endif()

#-----------------------------------------------------------------------------
# Check miminum compiler versions
#-----------------------------------------------------------------------------

if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
  # require at least gcc 4.9 as provided by ppa:ubuntu-toolchain-r/test for Ubuntu 14.04
  if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.9)
    message(FATAL_ERROR "GCC version must be at least 4.9
If you are using Ubuntu 14.04, you can easily install gcc and g++ 4.9 (or any later version available) in addition to your version ${CMAKE_CXX_COMPILER_VERSION}:
  sudo add-apt-repository ppa:ubuntu-toolchain-r/test
  sudo apt-get update
  sudo apt-get install gcc-4.9 g++-4.9
Make sure to explicitly specify these compilers when configuring MITK:
  CMAKE_C_COMPILER:FILEPATH=/usr/bin/gcc-4.9
  CMAKE_CXX_COMPILER:FILEPATH=/usr/bin/g++-4.9
For more information on the proposed PPA see the Toolchain Updates section of https://wiki.ubuntu.com/ToolChain.")
  endif()
elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
  # require at least clang 3.4
  if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.4)
    message(FATAL_ERROR "Clang version must be at least 3.4")
  endif()
elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "AppleClang")
  # require at least clang 5.0
  if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0)
    message(FATAL_ERROR "Apple Clang version must be at least 5.0")
  endif()
elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
  # require at least Visual Studio 2017
  if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.10)
    message(FATAL_ERROR "Microsoft Visual Studio 2017 or newer required")
  endif()
else()
  message(WARNING "You are using an unsupported compiler! Compilation has only been tested with Clang (Linux or Apple), GCC and MSVC.")
endif()

if(CMAKE_COMPILER_IS_GNUCXX)
  mitkFunctionGetGccVersion(${CMAKE_CXX_COMPILER} GCC_VERSION)
else()
  set(GCC_VERSION 0)
endif()

set(MITK_CXX_STANDARD 14)

set(CMAKE_CXX_EXTENSIONS 0)
set(CMAKE_CXX_STANDARD ${MITK_CXX_STANDARD})
set(CMAKE_CXX_STANDARD_REQUIRED 1)

# This is necessary to avoid problems with compile feature checks.
# CMAKE_CXX_STANDARD seems to only set the -std=c++14 flag for targets.
# However, compile flag checks also need to be done with -std=c++14.
# The MITK_CXX14_FLAG variable is also used for external projects
# build during the MITK super-build.
mitkFunctionCheckCompilerFlags("-std=c++14" MITK_CXX14_FLAG)

#-----------------------------------------------------------------------------
# Warn if source or build path is too long
#-----------------------------------------------------------------------------

if(WIN32)
  set(_src_dir_length_max 50)
  set(_bin_dir_length_max 50)
  if(MITK_USE_SUPERBUILD)
    set(_src_dir_length_max 34) # _src_dir_length_max - strlen(ep/src/ITK-build)
    set(_bin_dir_length_max 40) # _bin_dir_length_max - strlen(MITK-build)
  endif()

  string(LENGTH "${MITK_SOURCE_DIR}" _src_n)
  string(LENGTH "${MITK_BINARY_DIR}" _bin_n)

  # The warnings should be converted to errors
  if(_src_n GREATER _src_dir_length_max)
    message(WARNING "MITK source code directory path length is too long (${_src_n} > ${_src_dir_length_max})."
                    "Please move the MITK source code directory to a directory with a shorter path." )
  endif()
  if(_bin_n GREATER _bin_dir_length_max)
    message(WARNING "MITK build directory path length is too long (${_bin_n} > ${_bin_dir_length_max})."
                    "Please move the MITK build directory to a directory with a shorter path." )
  endif()
endif()

#-----------------------------------------------------------------------------
# Additional MITK Options (also shown during superbuild)
#-----------------------------------------------------------------------------

# -----------------------------------------
# General build options
option(BUILD_SHARED_LIBS "Build MITK with shared libraries" ON)
option(WITH_COVERAGE "Enable/Disable coverage" OFF)
option(BUILD_TESTING "Test the project" ON)
option(MITK_FAST_TESTING "Disable long-running tests like packaging" OFF)
option(MITK_XVFB_TESTING "Execute test drivers through xvfb-run" OFF)

option(MITK_BUILD_ALL_APPS "Build all MITK applications" OFF)
option(MITK_BUILD_EXAMPLES "Build the MITK Examples" OFF)

mark_as_advanced(
  MITK_XVFB_TESTING
  MITK_FAST_TESTING
  MITK_BUILD_ALL_APPS
)

#-----------------------------------------------------------------------------
# Set UI testing flags
#-----------------------------------------------------------------------------
if(MITK_XVFB_TESTING)
  set(MITK_XVFB_TESTING_COMMAND "xvfb-run" "--auto-servernum" CACHE STRING "Command and options to test through Xvfb")
  mark_as_advanced(MITK_XVFB_TESTING_COMMAND)
endif(MITK_XVFB_TESTING)

# -----------------------------------------
# Other options
set(MITK_CUSTOM_REVISION_DESC "" CACHE STRING "Override MITK revision description")
mark_as_advanced(MITK_CUSTOM_REVISION_DESC)

set_property(GLOBAL PROPERTY MITK_EXTERNAL_PROJECTS "")

include(CMakeExternals/ExternalProjectList.cmake)

foreach(MITK_EXTENSION_DIR ${MITK_ABSOLUTE_EXTENSION_DIRS})
  set(MITK_CMAKE_EXTERNALS_EXTENSION_DIR "${MITK_EXTENSION_DIR}/CMakeExternals")
  if(EXISTS "${MITK_CMAKE_EXTERNALS_EXTENSION_DIR}/ExternalProjectList.cmake")
    include("${MITK_CMAKE_EXTERNALS_EXTENSION_DIR}/ExternalProjectList.cmake")
  endif()
endforeach()

# -----------------------------------------
# Other MITK_USE_* options not related to
# external projects build via the
# MITK superbuild

option(MITK_USE_BLUEBERRY "Build the BlueBerry platform" ON)
option(MITK_USE_OpenCL "Use OpenCL GPU-Computing library" OFF)
option(MITK_USE_OpenMP "Use OpenMP" OFF)
option(MITK_USE_Python3 "Use Python 3" OFF)

#-----------------------------------------------------------------------------
# Build configurations
#-----------------------------------------------------------------------------

set(_buildConfigs "Custom")

file(GLOB _buildConfigFiles CMake/BuildConfigurations/*.cmake)

foreach(_buildConfigFile ${_buildConfigFiles})
  get_filename_component(_buildConfigFile ${_buildConfigFile} NAME_WE)
  list(APPEND _buildConfigs ${_buildConfigFile})
endforeach()

foreach(MITK_EXTENSION_DIR ${MITK_ABSOLUTE_EXTENSION_DIRS})
  file(GLOB _extBuildConfigFiles "${MITK_EXTENSION_DIR}/CMake/BuildConfigurations/*.cmake")

  foreach(_extBuildConfigFile ${_extBuildConfigFiles})
    get_filename_component(_extBuildConfigFile "${_extBuildConfigFile}" NAME_WE)
    list(APPEND _buildConfigs "${_extBuildConfigFile}")
  endforeach()

  list(REMOVE_DUPLICATES _buildConfigs)
endforeach()

set(MITK_BUILD_CONFIGURATION "Custom" CACHE STRING "Use pre-defined MITK configurations")
set_property(CACHE MITK_BUILD_CONFIGURATION PROPERTY STRINGS ${_buildConfigs})

mitkFunctionEnableBuildConfiguration()

mitkFunctionCreateWhitelistPaths(MITK)
mitkFunctionFindWhitelists(MITK)

# -----------------------------------------
# Qt version related variables

option(MITK_USE_Qt5 "Use Qt 5 library" ON)

if(MITK_USE_Qt5)
  if(WIN32)
    set(MITK_QT5_MINIMUM_VERSION 5.12.9)
  else()
    set(MITK_QT5_MINIMUM_VERSION 5.12)
  endif()
  set(MITK_QT5_COMPONENTS Concurrent OpenGL PrintSupport Script Sql Svg Widgets Xml XmlPatterns WebEngineWidgets UiTools Help LinguistTools)
  if(APPLE)
    list(APPEND MITK_QT5_COMPONENTS DBus)
  elseif(UNIX)
    list(APPEND MITK_QT5_COMPONENTS X11Extras)
  endif()

  # Hint at default install locations of Qt
  if(NOT Qt5_DIR)
    if(MSVC)
      set(_dir_candidates "C:/Qt")

      if(CMAKE_GENERATOR MATCHES "^Visual Studio [0-9]+ ([0-9]+)")
        set(_compilers "msvc${CMAKE_MATCH_1}")
      elseif(CMAKE_GENERATOR MATCHES "Ninja")
        include(mitkFunctionGetMSVCVersion)
        mitkFunctionGetMSVCVersion()
        if(VISUAL_STUDIO_PRODUCT_NAME MATCHES "^Visual Studio ([0-9]+)")
          set(_compilers "msvc${CMAKE_MATCH_1}")
        endif()
      endif()

      if(_compilers MATCHES "[0-9]+")
        if (CMAKE_MATCH_0 EQUAL 2022)
          list(APPEND _compilers "msvc2019" "msvc2017") # Binary compatible
        elseif (CMAKE_MATCH_0 EQUAL 2019)
          list(APPEND _compilers "msvc2017") # Binary compatible
        endif()
      endif()
    else()
      set(_dir_candidates ~/Qt)

      if(APPLE)
        set(_compilers clang)
      else()
        list(APPEND _dir_candidates /opt/Qt)
        set(_compilers gcc)
      endif()
    endif()

    if(CMAKE_SIZEOF_VOID_P EQUAL 8)
      foreach(_compiler ${_compilers})
        list(APPEND _compilers64 "${_compiler}_64")
      endforeach()
      set(_compilers ${_compilers64})
    endif()

    foreach(_dir_candidate ${_dir_candidates})
      get_filename_component(_dir_candidate ${_dir_candidate} REALPATH)
      foreach(_compiler ${_compilers})
        set(_glob_expression "${_dir_candidate}/5.*/${_compiler}")
        file(GLOB _hints ${_glob_expression})
        list(SORT _hints)
        list(APPEND MITK_QT5_HINTS ${_hints})
      endforeach()
    endforeach()
  endif()

  find_package(Qt5 ${MITK_QT5_MINIMUM_VERSION} COMPONENTS ${MITK_QT5_COMPONENTS} REQUIRED HINTS ${MITK_QT5_HINTS})
endif()

# -----------------------------------------
# Custom dependency logic

if(WIN32 AND Qt5_DIR)
  set(_dir_candidate "${Qt5_DIR}/../../../../../Tools/OpenSSL/Win_x64")
  get_filename_component(_dir_candidate ${_dir_candidate} ABSOLUTE)
  if(EXISTS "${_dir_candidate}")
    set(OPENSSL_ROOT_DIR "${_dir_candidate}")
  endif()
endif()

find_package(OpenSSL)

option(MITK_USE_SYSTEM_Boost "Use the system Boost" OFF)

set(MITK_USE_Boost_LIBRARIES "" CACHE STRING "A semi-colon separated list of required Boost libraries")

if(MITK_USE_cpprestsdk)
  if(NOT OpenSSL_FOUND)
    set(openssl_message "Could not find OpenSSL (dependency of C++ REST SDK).\n")
    if(UNIX)
      if(APPLE)
        set(openssl_message "${openssl_message}Please install it using your favorite package management "
                            "system (i.e. Homebrew or MacPorts).\n")
      else()
        set(openssl_message "${openssl_message}Please install the dev package of OpenSSL (i.e. libssl-dev).\n")
      endif()
    else()
      set(openssl_message "${openssl_message}Please either install Win32 OpenSSL:\n"
                          "  https://slproweb.com/products/Win32OpenSSL.html\n"
                          "Or use the Qt Maintenance tool to install:\n"
                          "  Developer and Designer Tools > OpenSSL Toolkit > OpenSSL 64-bit binaries\n")
    endif()
    set(openssl_message "${openssl_message}If it still cannot be found, you can hint CMake to find OpenSSL by "
                        "adding/setting the OPENSSL_ROOT_DIR variable to the root directory of an "
                        "OpenSSL installation. Make sure to clear variables of partly found "
                        "versions of OpenSSL before, or they will be mixed up.")
    message(FATAL_ERROR ${openssl_message})
  endif()

  list(APPEND MITK_USE_Boost_LIBRARIES date_time regex system)
  if(UNIX)
    list(APPEND MITK_USE_Boost_LIBRARIES atomic chrono filesystem random thread)
  endif()
  list(REMOVE_DUPLICATES MITK_USE_Boost_LIBRARIES)
  set(MITK_USE_Boost_LIBRARIES ${MITK_USE_Boost_LIBRARIES} CACHE STRING "A semi-colon separated list of required Boost libraries" FORCE)
endif()

if(MITK_USE_Python3)
  set(MITK_USE_ZLIB ON CACHE BOOL "" FORCE)

  if(APPLE AND CMAKE_FRAMEWORK_PATH AND CMAKE_FRAMEWORK_PATH MATCHES "python3\\.?([0-9]+)")
    find_package(Python3 3.${CMAKE_MATCH_1} EXACT REQUIRED COMPONENTS Interpreter Development NumPy)
  else()
    find_package(Python3 REQUIRED COMPONENTS Interpreter Development NumPy)
  endif()

  if(WIN32)
    string(REPLACE "\\" "/" Python3_STDARCH "${Python3_STDARCH}")
    string(REPLACE "\\" "/" Python3_STDLIB "${Python3_STDLIB}")
    string(REPLACE "\\" "/" Python3_SITELIB "${Python3_SITELIB}")
  endif()
endif()

if(BUILD_TESTING AND NOT MITK_USE_CppUnit)
  message("> Forcing MITK_USE_CppUnit to ON because BUILD_TESTING=ON")
  set(MITK_USE_CppUnit ON CACHE BOOL "Use CppUnit for unit tests" FORCE)
endif()

if(MITK_USE_BLUEBERRY)
  option(MITK_BUILD_ALL_PLUGINS "Build all MITK plugins" OFF)
  mark_as_advanced(MITK_BUILD_ALL_PLUGINS)

  if(NOT MITK_USE_CTK)
    message("> Forcing MITK_USE_CTK to ON because of MITK_USE_BLUEBERRY")
    set(MITK_USE_CTK ON CACHE BOOL "Use CTK in MITK" FORCE)
  endif()
endif()

#-----------------------------------------------------------------------------
# Pixel type multiplexing
#-----------------------------------------------------------------------------

# Customize the default pixel types for multiplex macros

set(MITK_ACCESSBYITK_INTEGRAL_PIXEL_TYPES
    "int, unsigned int, short, unsigned short, char, unsigned char"
    CACHE STRING "List of integral pixel types used in AccessByItk and InstantiateAccessFunction macros")

set(MITK_ACCESSBYITK_FLOATING_PIXEL_TYPES
    "double, float"
    CACHE STRING "List of floating pixel types used in AccessByItk and InstantiateAccessFunction macros")

set(MITK_ACCESSBYITK_COMPOSITE_PIXEL_TYPES
    "itk::RGBPixel<unsigned char>, itk::RGBAPixel<unsigned char>"
    CACHE STRING "List of composite pixel types used in AccessByItk and InstantiateAccessFunction macros")

set(MITK_ACCESSBYITK_DIMENSIONS
    "2,3"
    CACHE STRING "List of dimensions used in AccessByItk and InstantiateAccessFunction macros")

mark_as_advanced(MITK_ACCESSBYITK_INTEGRAL_PIXEL_TYPES
                 MITK_ACCESSBYITK_FLOATING_PIXEL_TYPES
                 MITK_ACCESSBYITK_COMPOSITE_PIXEL_TYPES
                 MITK_ACCESSBYITK_DIMENSIONS
                )

# consistency checks

if(NOT MITK_ACCESSBYITK_INTEGRAL_PIXEL_TYPES)
  set(MITK_ACCESSBYITK_INTEGRAL_PIXEL_TYPES
      "int, unsigned int, short, unsigned short, char, unsigned char"
      CACHE STRING "List of integral pixel types used in AccessByItk and InstantiateAccessFunction macros" FORCE)
endif()

if(NOT MITK_ACCESSBYITK_FLOATING_PIXEL_TYPES)
  set(MITK_ACCESSBYITK_FLOATING_PIXEL_TYPES
      "double, float"
      CACHE STRING "List of floating pixel types used in AccessByItk and InstantiateAccessFunction macros" FORCE)
endif()

if(NOT MITK_ACCESSBYITK_COMPOSITE_PIXEL_TYPES)
  set(MITK_ACCESSBYITK_COMPOSITE_PIXEL_TYPES
    "itk::RGBPixel<unsigned char>, itk::RGBAPixel<unsigned char>"
    CACHE STRING "List of composite pixel types used in AccessByItk and InstantiateAccessFunction macros" FORCE)
endif()

if(NOT MITK_ACCESSBYITK_VECTOR_PIXEL_TYPES)
  string(REPLACE "," ";" _integral_types ${MITK_ACCESSBYITK_INTEGRAL_PIXEL_TYPES})
  string(REPLACE "," ";" _floating_types ${MITK_ACCESSBYITK_FLOATING_PIXEL_TYPES})
  foreach(_scalar_type ${_integral_types} ${_floating_types})
    set(MITK_ACCESSBYITK_VECTOR_PIXEL_TYPES
        "${MITK_ACCESSBYITK_VECTOR_PIXEL_TYPES}itk::VariableLengthVector<${_scalar_type}>,")
  endforeach()
  string(LENGTH "${MITK_ACCESSBYITK_VECTOR_PIXEL_TYPES}" _length)
  math(EXPR _length "${_length} - 1")
  string(SUBSTRING "${MITK_ACCESSBYITK_VECTOR_PIXEL_TYPES}" 0 ${_length} MITK_ACCESSBYITK_VECTOR_PIXEL_TYPES)
  set(MITK_ACCESSBYITK_VECTOR_PIXEL_TYPES ${MITK_ACCESSBYITK_VECTOR_PIXEL_TYPES}
      CACHE STRING "List of vector pixel types used in AccessByItk and InstantiateAccessFunction macros for itk::VectorImage types" FORCE)
endif()

if(NOT MITK_ACCESSBYITK_DIMENSIONS)
  set(MITK_ACCESSBYITK_DIMENSIONS
      "2,3"
      CACHE STRING "List of dimensions used in AccessByItk and InstantiateAccessFunction macros")
endif()

find_package(Git REQUIRED)

#-----------------------------------------------------------------------------
# Superbuild script
#-----------------------------------------------------------------------------

if(MITK_USE_SUPERBUILD)
  include("${CMAKE_CURRENT_SOURCE_DIR}/SuperBuild.cmake")

  # Print configuration summary
  message("\n\n")
  feature_summary(
    DESCRIPTION "------- FEATURE SUMMARY FOR ${PROJECT_NAME} -------"
    WHAT ALL)
  return()
endif()

#*****************************************************************************
#****************************  END OF SUPERBUILD  ****************************
#*****************************************************************************

#-----------------------------------------------------------------------------
# Organize MITK targets in folders
#-----------------------------------------------------------------------------

set_property(GLOBAL PROPERTY USE_FOLDERS ON)
set(MITK_ROOT_FOLDER "MITK" CACHE STRING "")
mark_as_advanced(MITK_ROOT_FOLDER)

#-----------------------------------------------------------------------------
# CMake function(s) and macro(s)
#-----------------------------------------------------------------------------

include(WriteBasicConfigVersionFile)
include(CheckCXXSourceCompiles)
include(GenerateExportHeader)

include(mitkFunctionAddCustomModuleTest)
include(mitkFunctionCheckModuleDependencies)
include(mitkFunctionCompileSnippets)
include(mitkFunctionConfigureVisualStudioUserProjectFile)
include(mitkFunctionCreateBlueBerryApplication)
include(mitkFunctionCreateCommandLineApp)
include(mitkFunctionCreateModule)
include(mitkFunctionCreatePlugin)
include(mitkFunctionCreateProvisioningFile)
include(mitkFunctionGetLibrarySearchPaths)
include(mitkFunctionGetVersion)
include(mitkFunctionGetVersionDescription)
include(mitkFunctionInstallAutoLoadModules)
include(mitkFunctionInstallCTKPlugin)
include(mitkFunctionInstallProvisioningFiles)
include(mitkFunctionInstallThirdPartyCTKPlugins)
include(mitkFunctionOrganizeSources)
include(mitkFunctionUseModules)
if( ${MITK_USE_MatchPoint} )
  include(mitkFunctionCreateMatchPointDeployedAlgorithm)
endif()
include(mitkMacroConfigureItkPixelTypes)
include(mitkMacroCreateExecutable)
include(mitkMacroCreateModuleTests)
include(mitkMacroGenerateToolsLibrary)
include(mitkMacroGetLinuxDistribution)
include(mitkMacroGetPMDPlatformString)
include(mitkMacroInstall)
include(mitkMacroInstallHelperApp)
include(mitkMacroInstallTargets)
include(mitkMacroMultiplexPicType)

# Deprecated
include(mitkMacroCreateCTKPlugin)

#-----------------------------------------------------------------------------
# Global CMake variables
#-----------------------------------------------------------------------------

# Required and enabled C++14 features for all MITK code.
# These are added as PUBLIC compile features to all MITK modules.
set(MITK_CXX_FEATURES
  cxx_auto_type
  cxx_decltype
  cxx_enum_forward_declarations
  cxx_extended_friend_declarations
  cxx_extern_templates
  cxx_final
  cxx_lambdas
  cxx_local_type_template_args
  cxx_long_long_type
  cxx_nullptr
  cxx_override
  cxx_range_for
  cxx_right_angle_brackets
  cxx_rvalue_references
  cxx_static_assert
  cxx_strong_enums
  cxx_template_template_parameters
  cxx_trailing_return_types
  cxx_variadic_macros
)

if(NOT DEFINED CMAKE_DEBUG_POSTFIX)
  # We can't do this yet because the CTK Plugin Framework
  # cannot cope with a postfix yet.
  #set(CMAKE_DEBUG_POSTFIX d)
endif()

#-----------------------------------------------------------------------------
# Output directories.
#-----------------------------------------------------------------------------

set(_default_LIBRARY_output_dir lib)
set(_default_RUNTIME_output_dir bin)
set(_default_ARCHIVE_output_dir lib)

foreach(type LIBRARY RUNTIME ARCHIVE)
  # Make sure the directory exists
  if(MITK_CMAKE_${type}_OUTPUT_DIRECTORY
     AND NOT EXISTS ${MITK_CMAKE_${type}_OUTPUT_DIRECTORY})
    message("Creating directory MITK_CMAKE_${type}_OUTPUT_DIRECTORY: ${MITK_CMAKE_${type}_OUTPUT_DIRECTORY}")
    file(MAKE_DIRECTORY "${MITK_CMAKE_${type}_OUTPUT_DIRECTORY}")
  endif()

  if(MITK_CMAKE_${type}_OUTPUT_DIRECTORY)
    set(CMAKE_${type}_OUTPUT_DIRECTORY ${MITK_CMAKE_${type}_OUTPUT_DIRECTORY})
  else()
    set(CMAKE_${type}_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/${_default_${type}_output_dir})
    set(MITK_CMAKE_${type}_OUTPUT_DIRECTORY ${CMAKE_${type}_OUTPUT_DIRECTORY})
  endif()

  set(CMAKE_${type}_OUTPUT_DIRECTORY ${CMAKE_${type}_OUTPUT_DIRECTORY} CACHE INTERNAL "Output directory for ${type} files.")
  mark_as_advanced(CMAKE_${type}_OUTPUT_DIRECTORY)
endforeach()

#-----------------------------------------------------------------------------
# Set MITK specific options and variables (NOT available during superbuild)
#-----------------------------------------------------------------------------

if(OpenSSL_FOUND AND WIN32)
  set(MITK_OPENSSL_SSL_DLL "" CACHE FILEPATH "")
  set(MITK_OPENSSL_CRYPTO_DLL "" CACHE FILEPATH "")

  if(MITK_OPENSSL_SSL_DLL AND EXISTS "${MITK_OPENSSL_SSL_DLL}" AND MITK_OPENSSL_CRYPTO_DLL AND EXISTS "${MITK_OPENSSL_CRYPTO_DLL}")
    foreach(config_type ${CMAKE_CONFIGURATION_TYPES})
      execute_process(COMMAND "${CMAKE_COMMAND}" -E make_directory "${MITK_BINARY_DIR}/bin/${config_type}")
      configure_file("${MITK_OPENSSL_SSL_DLL}" "${MITK_BINARY_DIR}/bin/${config_type}/" COPYONLY)
      configure_file("${MITK_OPENSSL_CRYPTO_DLL}" "${MITK_BINARY_DIR}/bin/${config_type}/" COPYONLY)
    endforeach()

    MITK_INSTALL(FILES
      "${MITK_OPENSSL_SSL_DLL}"
      "${MITK_OPENSSL_CRYPTO_DLL}"
    )
  endif()
endif()

# Look for optional Doxygen package
find_package(Doxygen)

option(BLUEBERRY_DEBUG_SMARTPOINTER "Enable code for debugging smart pointers" OFF)
mark_as_advanced(BLUEBERRY_DEBUG_SMARTPOINTER)

# Ask the user to show the console window for applications
option(MITK_SHOW_CONSOLE_WINDOW "Use this to enable or disable the console window when starting MITK GUI Applications" ON)
mark_as_advanced(MITK_SHOW_CONSOLE_WINDOW)

if(NOT MITK_FAST_TESTING)
  if(MITK_CTEST_SCRIPT_MODE STREQUAL "Continuous" OR MITK_CTEST_SCRIPT_MODE STREQUAL "Experimental")
    set(MITK_FAST_TESTING ON)
  endif()
endif()

if(NOT UNIX)
  set(MITK_WIN32_FORCE_STATIC "STATIC" CACHE INTERNAL "Use this variable to always build static libraries on non-unix platforms")
endif()

if(MITK_BUILD_ALL_PLUGINS)
  set(MITK_BUILD_ALL_PLUGINS_OPTION "FORCE_BUILD_ALL")
endif()

# Configure pixel types used for ITK image access multiplexing
mitkMacroConfigureItkPixelTypes()

# Configure module naming conventions
set(MITK_MODULE_NAME_REGEX_MATCH "^[A-Z].*$")
set(MITK_MODULE_NAME_REGEX_NOT_MATCH "^[Mm][Ii][Tt][Kk].*$")
set(MITK_DEFAULT_MODULE_NAME_PREFIX "Mitk")
set(MITK_MODULE_NAME_PREFIX ${MITK_DEFAULT_MODULE_NAME_PREFIX})
set(MITK_MODULE_NAME_DEFAULTS_TO_DIRECTORY_NAME 1)

#-----------------------------------------------------------------------------
# Get MITK version info
#-----------------------------------------------------------------------------

mitkFunctionGetVersion(${MITK_SOURCE_DIR} MITK)
mitkFunctionGetVersionDescription(${MITK_SOURCE_DIR} MITK)

# MITK_VERSION
set(MITK_VERSION_STRING "${MITK_VERSION_MAJOR}.${MITK_VERSION_MINOR}.${MITK_VERSION_PATCH}")
if(MITK_VERSION_PATCH STREQUAL "99")
  set(MITK_VERSION_STRING "${MITK_VERSION_STRING}-${MITK_REVISION_SHORTID}")
endif()

#-----------------------------------------------------------------------------
# Installation preparation
#
# These should be set before any MITK install macros are used
#-----------------------------------------------------------------------------

# on macOS all BlueBerry plugins get copied into every
# application bundle (.app directory) specified here
if(MITK_USE_BLUEBERRY AND APPLE)

  foreach(MITK_EXTENSION_DIR ${MITK_DIR_PLUS_EXTENSION_DIRS})
    set(MITK_APPLICATIONS_EXTENSION_DIR "${MITK_EXTENSION_DIR}/Applications")
    if(EXISTS "${MITK_APPLICATIONS_EXTENSION_DIR}/AppList.cmake")
      set(MITK_APPS "")
      include("${MITK_APPLICATIONS_EXTENSION_DIR}/AppList.cmake")
      foreach(mitk_app ${MITK_APPS})
        # extract option_name
        string(REPLACE "^^" "\\;" target_info ${mitk_app})
        set(target_info_list ${target_info})
        list(GET target_info_list 1 option_name)
        list(GET target_info_list 0 app_name)
        # check if the application is enabled
        if(${option_name} OR MITK_BUILD_ALL_APPS)
          set(MACOSX_BUNDLE_NAMES ${MACOSX_BUNDLE_NAMES} Mitk${app_name})
        endif()
      endforeach()
    endif()
  endforeach()

endif()

#-----------------------------------------------------------------------------
# Set coverage Flags
#-----------------------------------------------------------------------------

if(WITH_COVERAGE)
  if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
    set(coverage_flags "-g -fprofile-arcs -ftest-coverage -O0 -DNDEBUG")
    set(COVERAGE_CXX_FLAGS ${coverage_flags})
    set(COVERAGE_C_FLAGS ${coverage_flags})
  endif()
endif()

#-----------------------------------------------------------------------------
# MITK C/CXX Flags
#-----------------------------------------------------------------------------

set(MITK_C_FLAGS "${COVERAGE_C_FLAGS}")
set(MITK_C_FLAGS_DEBUG )
set(MITK_C_FLAGS_RELEASE )
set(MITK_CXX_FLAGS "${COVERAGE_CXX_FLAGS} ${MITK_CXX14_FLAG}")
set(MITK_CXX_FLAGS_DEBUG )
set(MITK_CXX_FLAGS_RELEASE )

set(MITK_EXE_LINKER_FLAGS )
set(MITK_SHARED_LINKER_FLAGS )

if(WIN32)
  set(MITK_CXX_FLAGS "${MITK_CXX_FLAGS} -DPOCO_NO_UNWINDOWS -DWIN32_LEAN_AND_MEAN -DNOMINMAX")
  mitkFunctionCheckCompilerFlags("/wd4005" MITK_CXX_FLAGS) # warning C4005: macro redefinition
  mitkFunctionCheckCompilerFlags("/wd4231" MITK_CXX_FLAGS) # warning C4231: nonstandard extension used : 'extern' before template explicit instantiation
  # the following line should be removed after fixing bug 17637
  mitkFunctionCheckCompilerFlags("/wd4316" MITK_CXX_FLAGS) # warning C4316: object alignment on heap
  mitkFunctionCheckCompilerFlags("/wd4180" MITK_CXX_FLAGS) # warning C4180: qualifier applied to function type has no meaning
  mitkFunctionCheckCompilerFlags("/wd4251" MITK_CXX_FLAGS) # warning C4251: 'identifier' : class 'type' needs to have dll-interface to be used by clients of class 'type2'
endif()

if(APPLE)
  set(MITK_CXX_FLAGS "${MITK_CXX_FLAGS} -DGL_SILENCE_DEPRECATION") # Apple deprecated OpenGL in macOS 10.14
endif()

if(NOT MSVC_VERSION)
  foreach(_flag
    -Wall
    -Wextra
    -Wpointer-arith
    -Winvalid-pch
    -Wcast-align
    -Wwrite-strings
    -Wno-error=gnu
    -Wno-error=unknown-pragmas
    # The strict-overflow warning is generated by ITK template code
    -Wno-error=strict-overflow
    -Woverloaded-virtual
    -Wstrict-null-sentinel
    #-Wold-style-cast
    #-Wsign-promo
    -Wno-error=deprecated-copy
    -Wno-array-bounds

    -fdiagnostics-show-option
    )
    mitkFunctionCheckCAndCXXCompilerFlags(${_flag} MITK_C_FLAGS MITK_CXX_FLAGS)
  endforeach()
endif()

if(CMAKE_COMPILER_IS_GNUCXX AND NOT APPLE)
  mitkFunctionCheckCompilerFlags("-Wl,--no-undefined" MITK_SHARED_LINKER_FLAGS)
  mitkFunctionCheckCompilerFlags("-Wl,--as-needed" MITK_SHARED_LINKER_FLAGS)
endif()

if(CMAKE_COMPILER_IS_GNUCXX)
  mitkFunctionCheckCAndCXXCompilerFlags("-fstack-protector-all" MITK_C_FLAGS MITK_CXX_FLAGS)
  set(MITK_CXX_FLAGS_RELEASE "-U_FORTIFY_SOURCES -D_FORTIFY_SOURCE=2 ${MITK_CXX_FLAGS_RELEASE}")
endif()

set(MITK_MODULE_LINKER_FLAGS ${MITK_SHARED_LINKER_FLAGS})
set(MITK_EXE_LINKER_FLAGS ${MITK_SHARED_LINKER_FLAGS})

#-----------------------------------------------------------------------------
# MITK Packages
#-----------------------------------------------------------------------------

set(MITK_MODULES_PACKAGE_DEPENDS_DIR ${MITK_SOURCE_DIR}/CMake/PackageDepends)
set(MODULES_PACKAGE_DEPENDS_DIRS ${MITK_MODULES_PACKAGE_DEPENDS_DIR})

foreach(MITK_EXTENSION_DIR ${MITK_ABSOLUTE_EXTENSION_DIRS})
  set(MITK_PACKAGE_DEPENDS_EXTENSION_DIR "${MITK_EXTENSION_DIR}/CMake/PackageDepends")
  if(EXISTS "${MITK_PACKAGE_DEPENDS_EXTENSION_DIR}")
    list(APPEND MODULES_PACKAGE_DEPENDS_DIRS "${MITK_PACKAGE_DEPENDS_EXTENSION_DIR}")
  endif()
endforeach()

if(NOT MITK_USE_SYSTEM_Boost)
  set(Boost_NO_SYSTEM_PATHS 1)
endif()

set(Boost_USE_MULTITHREADED 1)
set(Boost_USE_STATIC_LIBS 0)
set(Boost_USE_STATIC_RUNTIME 0)
set(Boost_ADDITIONAL_VERSIONS 1.74 1.74.0)

# We need this later for a DCMTK workaround
set(_dcmtk_dir_orig ${DCMTK_DIR})

# This property is populated at the top half of this file
get_property(MITK_EXTERNAL_PROJECTS GLOBAL PROPERTY MITK_EXTERNAL_PROJECTS)
foreach(ep ${MITK_EXTERNAL_PROJECTS})
  get_property(_package GLOBAL PROPERTY MITK_${ep}_PACKAGE)
  get_property(_components GLOBAL PROPERTY MITK_${ep}_COMPONENTS)
  if(MITK_USE_${ep} AND _package)
    if(_components)
      find_package(${_package} COMPONENTS ${_components} REQUIRED CONFIG)
    else()
      # Prefer config mode first because it finds external
      # <proj>Config.cmake files pointed at by <proj>_DIR variables.
      # Otherwise, existing Find<proj>.cmake files could fail.

      if(DEFINED ${_package}_DIR)
        #we store the information because it will be overwritten by find_package
        #and would get lost for all EPs that use on Find<proj>.cmake instead of config
        #files.
        set(_temp_EP_${_package}_dir ${${_package}_DIR})
      endif(DEFINED ${_package}_DIR)

      find_package(${_package} QUIET CONFIG)
      string(TOUPPER "${_package}" _package_uc)
      if(NOT (${_package}_FOUND OR ${_package_uc}_FOUND))
        if(DEFINED _temp_EP_${_package}_dir)
            set(${_package}_DIR ${_temp_EP_${_package}_dir} CACHE PATH "externaly set dir of the package ${_package}" FORCE)
        endif(DEFINED _temp_EP_${_package}_dir)

        find_package(${_package} REQUIRED)
      endif()
    endif()
  endif()
endforeach()

# Ensure that the MITK CMake module path comes first
set(CMAKE_MODULE_PATH
  ${MITK_CMAKE_DIR}
  ${CMAKE_MODULE_PATH}
  )

if(MITK_USE_DCMTK)
  if(${_dcmtk_dir_orig} MATCHES "${MITK_EXTERNAL_PROJECT_PREFIX}.*")
    # Help our FindDCMTK.cmake script find our super-build DCMTK
    set(DCMTK_DIR ${MITK_EXTERNAL_PROJECT_PREFIX})
  else()
    # Use the original value
    set(DCMTK_DIR ${_dcmtk_dir_orig})
  endif()
endif()

if(MITK_USE_DCMQI)
  # Due to the preferred CONFIG mode in find_package calls above,
  # the DCMQIConfig.cmake file is read, which does not provide useful
  # package information. We explictly need MODULE mode to find DCMQI.
    # Help our FindDCMQI.cmake script find our super-build DCMQI
  set(DCMQI_DIR ${MITK_EXTERNAL_PROJECT_PREFIX})
  find_package(DCMQI REQUIRED)
endif()

if(MITK_USE_OpenIGTLink)
  link_directories(${OpenIGTLink_LIBRARY_DIRS})
endif()

if(MITK_USE_OpenCL)
  find_package(OpenCL REQUIRED)
endif()

if(MITK_USE_OpenMP)
  find_package(OpenMP REQUIRED COMPONENTS CXX)
else()
  find_package(OpenMP QUIET COMPONENTS CXX)

  if(OpenMP_FOUND)
    set(MITK_USE_OpenMP ON CACHE BOOL "" FORCE)
  elseif(APPLE AND OpenMP_libomp_LIBRARY AND NOT OpenMP_CXX_LIB_NAMES)
    set(OpenMP_CXX_LIB_NAMES libomp CACHE STRING "" FORCE)
    get_filename_component(openmp_lib_dir "${OpenMP_libomp_LIBRARY}" DIRECTORY)
    set(openmp_include_dir "${openmp_lib_dir}/../include")
    if(EXISTS "${openmp_include_dir}")
      get_filename_component(openmp_include_dir "${openmp_include_dir}" REALPATH)
      set(OpenMP_CXX_FLAGS "-Xpreprocessor -fopenmp -I${openmp_include_dir}" CACHE STRING "" FORCE)
      find_package(OpenMP QUIET COMPONENTS CXX)
      if(OpenMP_FOUND)
        set(MITK_USE_OpenMP ON CACHE BOOL "" FORCE)
      endif()
    endif()
  endif()
endif()

# Qt support
if(MITK_USE_Qt5)
  find_package(Qt5Core ${MITK_QT5_MINIMUM_VERSION} REQUIRED) # at least Core required
  get_target_property(_qmake_exec Qt5::qmake LOCATION)
  execute_process(COMMAND ${_qmake_exec} -query QT_INSTALL_BINS
    RESULT_VARIABLE _result
     OUTPUT_VARIABLE QT_BINARY_DIR
    ERROR_VARIABLE _error
  )
  string(STRIP "${QT_BINARY_DIR}" QT_BINARY_DIR)
  if(_result OR NOT EXISTS "${QT_BINARY_DIR}")
    message(FATAL_ERROR "Could not determine Qt binary directory: ${_result} ${QT_BINARY_DIR} ${_error}")
  endif()

  find_program(QT_HELPGENERATOR_EXECUTABLE
    NAMES qhelpgenerator qhelpgenerator-qt5 qhelpgenerator5
    PATHS ${QT_BINARY_DIR}
    NO_DEFAULT_PATH
  )

  find_program(QT_COLLECTIONGENERATOR_EXECUTABLE
    NAMES qcollectiongenerator qcollectiongenerator-qt5 qcollectiongenerator5
    PATHS ${QT_BINARY_DIR}
    NO_DEFAULT_PATH
  )

  find_program(QT_ASSISTANT_EXECUTABLE
    NAMES assistant assistant-qt5 assistant5
    PATHS ${QT_BINARY_DIR}
    NO_DEFAULT_PATH
  )

  find_program(QT_XMLPATTERNS_EXECUTABLE
    NAMES xmlpatterns
    PATHS ${QT_BINARY_DIR}
    NO_DEFAULT_PATH
  )

  mark_as_advanced(QT_HELPGENERATOR_EXECUTABLE
                   QT_COLLECTIONGENERATOR_EXECUTABLE
                   QT_ASSISTANT_EXECUTABLE
                   QT_XMLPATTERNS_EXECUTABLE
                  )

  if(MITK_USE_BLUEBERRY)
    option(BLUEBERRY_USE_QT_HELP "Enable support for integrating plugin documentation into Qt Help" ${DOXYGEN_FOUND})
    mark_as_advanced(BLUEBERRY_USE_QT_HELP)

    # Sanity checks for in-application BlueBerry plug-in help generation
    if(BLUEBERRY_USE_QT_HELP)
      set(_force_blueberry_use_qt_help_to_off 0)
      if(NOT DOXYGEN_FOUND)
        message("> Forcing BLUEBERRY_USE_QT_HELP to OFF because Doxygen was not found.")
        set(_force_blueberry_use_qt_help_to_off 1)
      endif()
      if(DOXYGEN_FOUND AND DOXYGEN_VERSION VERSION_LESS 1.8.7)
        message("> Forcing BLUEBERRY_USE_QT_HELP to OFF because Doxygen version 1.8.7 or newer not found.")
        set(_force_blueberry_use_qt_help_to_off 1)
      endif()

      if(NOT QT_HELPGENERATOR_EXECUTABLE)
        message("> Forcing BLUEBERRY_USE_QT_HELP to OFF because QT_HELPGENERATOR_EXECUTABLE is empty.")
        set(_force_blueberry_use_qt_help_to_off 1)
      endif()

      if(NOT MITK_USE_Qt5)
        message("> Forcing BLUEBERRY_USE_QT_HELP to OFF because MITK_USE_Qt5 is OFF.")
        set(_force_blueberry_use_qt_help_to_off 1)
      endif()

      if(NOT QT_XMLPATTERNS_EXECUTABLE)
        message("You have enabled Qt Help support, but QT_XMLPATTERNS_EXECUTABLE is empty")
        set(_force_blueberry_use_qt_help_to_off 1)
      endif()

      if(_force_blueberry_use_qt_help_to_off)
        set(BLUEBERRY_USE_QT_HELP OFF CACHE BOOL "Enable support for integrating plugin documentation into Qt Help" FORCE)
      endif()
    endif()

    if(BLUEBERRY_QT_HELP_REQUIRED AND NOT BLUEBERRY_USE_QT_HELP)
      message(FATAL_ERROR "BLUEBERRY_USE_QT_HELP is required to be set to ON")
    endif()
  endif()

endif()

#-----------------------------------------------------------------------------
# Testing
#-----------------------------------------------------------------------------

if(BUILD_TESTING)
  #[[ See T27701
  # Initial cache for ProjectTemplate and PluginGenerator tests
  configure_file(
     CMake/mitkTestInitialCache.txt.in
     ${MITK_BINARY_DIR}/mitkTestInitialCache.txt
     @ONLY
  )]]

  # Configuration for the CMake-generated test driver
  set(CMAKE_TESTDRIVER_EXTRA_INCLUDES "#include <stdexcept>")
  set(CMAKE_TESTDRIVER_BEFORE_TESTMAIN "
    try
      {")
  set(CMAKE_TESTDRIVER_AFTER_TESTMAIN "
      }
      catch (const std::exception& e)
      {
        fprintf(stderr, \"%s\\n\", e.what());
        return EXIT_FAILURE;
      }
      catch (...)
      {
        printf(\"Exception caught in the test driver\\n\");
        return EXIT_FAILURE;
      }")

  set(MITK_TEST_OUTPUT_DIR "${MITK_BINARY_DIR}/test_output")
  if(NOT EXISTS ${MITK_TEST_OUTPUT_DIR})
    file(MAKE_DIRECTORY ${MITK_TEST_OUTPUT_DIR})
  endif()

  # Test the package target
  include(mitkPackageTest)
endif()

configure_file(mitkTestingConfig.h.in ${MITK_BINARY_DIR}/mitkTestingConfig.h)

#-----------------------------------------------------------------------------
# MITK_SUPERBUILD_BINARY_DIR
#-----------------------------------------------------------------------------

# If MITK_SUPERBUILD_BINARY_DIR isn't defined, it means MITK is *NOT* build using Superbuild.
# In that specific case, MITK_SUPERBUILD_BINARY_DIR should default to MITK_BINARY_DIR
if(NOT DEFINED MITK_SUPERBUILD_BINARY_DIR)
  set(MITK_SUPERBUILD_BINARY_DIR ${MITK_BINARY_DIR})
endif()

#-----------------------------------------------------------------------------
# Set C/CXX and linker flags for MITK code
#-----------------------------------------------------------------------------

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${MITK_CXX_FLAGS}")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${MITK_CXX_FLAGS_DEBUG}")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${MITK_CXX_FLAGS_RELEASE}")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${MITK_C_FLAGS}")
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${MITK_C_FLAGS_DEBUG}")
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ${MITK_C_FLAGS_RELEASE}")

set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${MITK_EXE_LINKER_FLAGS}")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${MITK_SHARED_LINKER_FLAGS}")
set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${MITK_MODULE_LINKER_FLAGS}")

#-----------------------------------------------------------------------------
# Add subdirectories
#-----------------------------------------------------------------------------

add_subdirectory(Utilities)

add_subdirectory(Modules)

include("${CMAKE_CURRENT_SOURCE_DIR}/Modules/ModuleList.cmake")
mitkFunctionWhitelistModules(MITK MITK_MODULES)

set(MITK_ROOT_FOLDER_BACKUP "${MITK_ROOT_FOLDER}")
foreach(MITK_EXTENSION_DIR ${MITK_ABSOLUTE_EXTENSION_DIRS})
  get_filename_component(MITK_ROOT_FOLDER "${MITK_EXTENSION_DIR}" NAME)
  set(MITK_MODULES_EXTENSION_DIR "${MITK_EXTENSION_DIR}/Modules")
  if(EXISTS "${MITK_MODULES_EXTENSION_DIR}/ModuleList.cmake")
    set(MITK_MODULES "")
    include("${MITK_MODULES_EXTENSION_DIR}/ModuleList.cmake")
    foreach(mitk_module ${MITK_MODULES})
      add_subdirectory("${MITK_MODULES_EXTENSION_DIR}/${mitk_module}" "Modules/${mitk_module}")
    endforeach()
  endif()
  set(MITK_MODULE_NAME_PREFIX ${MITK_DEFAULT_MODULE_NAME_PREFIX})
endforeach()
set(MITK_ROOT_FOLDER "${MITK_ROOT_FOLDER_BACKUP}")

add_subdirectory(Wrapping)

set(MITK_DOXYGEN_OUTPUT_DIR "${PROJECT_BINARY_DIR}/Documentation/Doxygen" CACHE PATH
  "Output directory for doxygen generated documentation.")

if(MITK_USE_BLUEBERRY)
  include("${CMAKE_CURRENT_SOURCE_DIR}/Plugins/PluginList.cmake")
  mitkFunctionWhitelistPlugins(MITK MITK_PLUGINS)

  set(mitk_plugins_fullpath "")
  foreach(mitk_plugin ${MITK_PLUGINS})
    list(APPEND mitk_plugins_fullpath Plugins/${mitk_plugin})
  endforeach()

  set(MITK_PLUGIN_REGEX_LIST "")
  foreach(MITK_EXTENSION_DIR ${MITK_ABSOLUTE_EXTENSION_DIRS})
    set(MITK_PLUGINS_EXTENSION_DIR "${MITK_EXTENSION_DIR}/Plugins")
    if(EXISTS "${MITK_PLUGINS_EXTENSION_DIR}/PluginList.cmake")
      set(MITK_PLUGINS "")
      include("${MITK_PLUGINS_EXTENSION_DIR}/PluginList.cmake")
      foreach(mitk_plugin ${MITK_PLUGINS})
        list(APPEND mitk_plugins_fullpath "${MITK_PLUGINS_EXTENSION_DIR}/${mitk_plugin}")
      endforeach()
    endif()
  endforeach()

  if(EXISTS ${MITK_PRIVATE_MODULES}/PluginList.cmake)
    include(${MITK_PRIVATE_MODULES}/PluginList.cmake)

    foreach(mitk_plugin ${MITK_PRIVATE_PLUGINS})
      list(APPEND mitk_plugins_fullpath ${MITK_PRIVATE_MODULES}/${mitk_plugin})
    endforeach()
  endif()

  if(MITK_BUILD_EXAMPLES)
    include("${CMAKE_CURRENT_SOURCE_DIR}/Examples/Plugins/PluginList.cmake")
    set(mitk_example_plugins_fullpath )
    foreach(mitk_example_plugin ${MITK_EXAMPLE_PLUGINS})
      list(APPEND mitk_example_plugins_fullpath Examples/Plugins/${mitk_example_plugin})
      list(APPEND mitk_plugins_fullpath Examples/Plugins/${mitk_example_plugin})
    endforeach()
  endif()

  # Specify which plug-ins belong to this project
  macro(GetMyTargetLibraries all_target_libraries varname)
    set(re_ctkplugin_mitk "^org_mitk_[a-zA-Z0-9_]+$")
    set(re_ctkplugin_bb "^org_blueberry_[a-zA-Z0-9_]+$")
    set(_tmp_list)
    list(APPEND _tmp_list ${all_target_libraries})
    ctkMacroListFilter(_tmp_list re_ctkplugin_mitk re_ctkplugin_bb MITK_PLUGIN_REGEX_LIST OUTPUT_VARIABLE ${varname})
  endmacro()

  # Get infos about application directories and build options
  set(mitk_apps_fullpath "")
  foreach(MITK_EXTENSION_DIR ${MITK_DIR_PLUS_EXTENSION_DIRS})
    set(MITK_APPLICATIONS_EXTENSION_DIR "${MITK_EXTENSION_DIR}/Applications")
    if(EXISTS "${MITK_APPLICATIONS_EXTENSION_DIR}/AppList.cmake")
      set(MITK_APPS "")
      include("${MITK_APPLICATIONS_EXTENSION_DIR}/AppList.cmake")
      foreach(mitk_app ${MITK_APPS})
        # extract option_name
        string(REPLACE "^^" "\\;" target_info ${mitk_app})
        set(target_info_list ${target_info})
        list(GET target_info_list 0 directory_name)
        list(GET target_info_list 1 option_name)
        if(${option_name})
          list(APPEND mitk_apps_fullpath "${MITK_APPLICATIONS_EXTENSION_DIR}/${directory_name}^^${option_name}")
        endif()
      endforeach()
    endif()
  endforeach()

  if (mitk_plugins_fullpath)
    ctkMacroSetupPlugins(${mitk_plugins_fullpath}
                         BUILD_OPTION_PREFIX MITK_BUILD_
                         APPS ${mitk_apps_fullpath}
                         BUILD_ALL ${MITK_BUILD_ALL_PLUGINS}
                         COMPACT_OPTIONS)
  endif()

  set(MITK_PLUGIN_USE_FILE "${MITK_BINARY_DIR}/MitkPluginUseFile.cmake")
  if(${PROJECT_NAME}_PLUGIN_LIBRARIES)
    ctkFunctionGeneratePluginUseFile(${MITK_PLUGIN_USE_FILE})
  else()
    file(REMOVE ${MITK_PLUGIN_USE_FILE})
    set(MITK_PLUGIN_USE_FILE )
  endif()
endif()

#-----------------------------------------------------------------------------
# Documentation
#-----------------------------------------------------------------------------

if(DOXYGEN_FOUND)
  add_subdirectory(Documentation)
endif()

#-----------------------------------------------------------------------------
# Installation
#-----------------------------------------------------------------------------


# set MITK cpack variables
# These are the default variables, which can be overwritten ( see below )
include(mitkSetupCPack)

set(use_default_config ON)

set(ALL_MITK_APPS "")
set(activated_apps_no 0)

foreach(MITK_EXTENSION_DIR ${MITK_DIR_PLUS_EXTENSION_DIRS})
  set(MITK_APPLICATIONS_EXTENSION_DIR "${MITK_EXTENSION_DIR}/Applications")
  if(EXISTS "${MITK_APPLICATIONS_EXTENSION_DIR}/AppList.cmake")
    set(MITK_APPS "")
    include("${MITK_APPLICATIONS_EXTENSION_DIR}/AppList.cmake")
    foreach(mitk_app ${MITK_APPS})
      string(REPLACE "^^" "\\;" target_info ${mitk_app})
      set(target_info_list ${target_info})
      list(GET target_info_list 0 directory_name)
      list(GET target_info_list 1 option_name)
      list(GET target_info_list 2 executable_name)
      list(APPEND ALL_MITK_APPS "${MITK_EXTENSION_DIR}/Applications/${directory_name}^^${option_name}^^${executable_name}")
      if(${option_name} OR MITK_BUILD_ALL_APPS)
        MATH(EXPR activated_apps_no "${activated_apps_no} + 1")
      endif()
    endforeach()
  endif()
endforeach()

list(LENGTH ALL_MITK_APPS app_count)

if(app_count EQUAL 1 AND (activated_apps_no EQUAL 1 OR MITK_BUILD_ALL_APPS))
  # Corner case if there is only one app in total
  set(use_project_cpack ON)
elseif(activated_apps_no EQUAL 1 AND NOT MITK_BUILD_ALL_APPS)
  # Only one app is enabled (no "build all" flag set)
  set(use_project_cpack ON)
else()
  # Less or more then one app is enabled
  set(use_project_cpack OFF)
endif()

foreach(mitk_app ${ALL_MITK_APPS})
  # extract target_dir and option_name
  string(REPLACE "^^" "\\;" target_info ${mitk_app})
  set(target_info_list ${target_info})
  list(GET target_info_list 0 target_dir)
  list(GET target_info_list 1 option_name)
  list(GET target_info_list 2 executable_name)
  # check if the application is enabled
  if(${option_name} OR MITK_BUILD_ALL_APPS)
    # check whether application specific configuration files will be used
    if(use_project_cpack)
      # use files if they exist
      if(EXISTS "${target_dir}/CPackOptions.cmake")
        include("${target_dir}/CPackOptions.cmake")
      endif()

      if(EXISTS "${target_dir}/CPackConfig.cmake.in")
        set(CPACK_PROJECT_CONFIG_FILE "${target_dir}/CPackConfig.cmake")
        configure_file(${target_dir}/CPackConfig.cmake.in
                       ${CPACK_PROJECT_CONFIG_FILE} @ONLY)
        set(use_default_config OFF)
      endif()
    endif()
  # add link to the list
  list(APPEND CPACK_CREATE_DESKTOP_LINKS "${executable_name}")
  endif()
endforeach()

# if no application specific configuration file was used, use default
if(use_default_config)
  configure_file(${MITK_SOURCE_DIR}/MITKCPackOptions.cmake.in
                 ${MITK_BINARY_DIR}/MITKCPackOptions.cmake @ONLY)
  set(CPACK_PROJECT_CONFIG_FILE "${MITK_BINARY_DIR}/MITKCPackOptions.cmake")
endif()

# include CPack model once all variables are set
include(CPack)

# Additional installation rules
include(mitkInstallRules)

#-----------------------------------------------------------------------------
# Last configuration steps
#-----------------------------------------------------------------------------

# ---------------- Export targets -----------------

set(MITK_EXPORTS_FILE "${MITK_BINARY_DIR}/MitkExports.cmake")
file(REMOVE ${MITK_EXPORTS_FILE})

set(targets_to_export)
get_property(module_targets GLOBAL PROPERTY MITK_MODULE_TARGETS)
if(module_targets)
  list(APPEND targets_to_export ${module_targets})
endif()

if(MITK_USE_BLUEBERRY)
  if(MITK_PLUGIN_LIBRARIES)
    list(APPEND targets_to_export ${MITK_PLUGIN_LIBRARIES})
  endif()
endif()

export(TARGETS ${targets_to_export} APPEND
       FILE ${MITK_EXPORTS_FILE})

set(MITK_EXPORTED_TARGET_PROPERTIES )
foreach(target_to_export ${targets_to_export})
  get_target_property(autoload_targets ${target_to_export} MITK_AUTOLOAD_TARGETS)
  if(autoload_targets)
    set(MITK_EXPORTED_TARGET_PROPERTIES "${MITK_EXPORTED_TARGET_PROPERTIES}
set_target_properties(${target_to_export} PROPERTIES MITK_AUTOLOAD_TARGETS \"${autoload_targets}\")")
  endif()
  get_target_property(autoload_dir ${target_to_export} MITK_AUTOLOAD_DIRECTORY)
  if(autoload_dir)
    set(MITK_EXPORTED_TARGET_PROPERTIES "${MITK_EXPORTED_TARGET_PROPERTIES}
set_target_properties(${target_to_export} PROPERTIES MITK_AUTOLOAD_DIRECTORY \"${autoload_dir}\")")
  endif()

  get_target_property(deprecated_module ${target_to_export} MITK_MODULE_DEPRECATED_SINCE)
  if(deprecated_module)
    set(MITK_EXPORTED_TARGET_PROPERTIES "${MITK_EXPORTED_TARGET_PROPERTIES}
set_target_properties(${target_to_export} PROPERTIES MITK_MODULE_DEPRECATED_SINCE \"${deprecated_module}\")")
  endif()
endforeach()

# ---------------- External projects -----------------

get_property(MITK_ADDITIONAL_LIBRARY_SEARCH_PATHS_CONFIG GLOBAL PROPERTY MITK_ADDITIONAL_LIBRARY_SEARCH_PATHS)

set(MITK_CONFIG_EXTERNAL_PROJECTS )
#string(REPLACE "^^" ";" _mitk_external_projects ${MITK_EXTERNAL_PROJECTS})

foreach(ep ${MITK_EXTERNAL_PROJECTS})
  get_property(_components GLOBAL PROPERTY MITK_${ep}_COMPONENTS)
  set(MITK_CONFIG_EXTERNAL_PROJECTS "${MITK_CONFIG_EXTERNAL_PROJECTS}
set(MITK_USE_${ep} ${MITK_USE_${ep}})
set(MITK_${ep}_DIR \"${${ep}_DIR}\")
set(MITK_${ep}_COMPONENTS ${_components})
")
endforeach()

foreach(ep ${MITK_EXTERNAL_PROJECTS})
  get_property(_package GLOBAL PROPERTY MITK_${ep}_PACKAGE)
  get_property(_components GLOBAL PROPERTY MITK_${ep}_COMPONENTS)
  if(_components)
      set(_components_arg COMPONENTS \${_components})
  else()
    set(_components_arg)
  endif()

  if(_package)
    set(MITK_CONFIG_EXTERNAL_PROJECTS "${MITK_CONFIG_EXTERNAL_PROJECTS}
if(MITK_USE_${ep})
  set(${ep}_DIR \${MITK_${ep}_DIR})
  if(MITK_${ep}_COMPONENTS)
    mitkMacroFindDependency(${_package} COMPONENTS \${MITK_${ep}_COMPONENTS})
  else()
    mitkMacroFindDependency(${_package})
  endif()
endif()")
  endif()
endforeach()


# ---------------- Tools -----------------

configure_file(${MITK_SOURCE_DIR}/CMake/ToolExtensionITKFactory.cpp.in
               ${MITK_BINARY_DIR}/ToolExtensionITKFactory.cpp.in COPYONLY)
configure_file(${MITK_SOURCE_DIR}/CMake/ToolExtensionITKFactoryLoader.cpp.in
               ${MITK_BINARY_DIR}/ToolExtensionITKFactoryLoader.cpp.in COPYONLY)
configure_file(${MITK_SOURCE_DIR}/CMake/ToolGUIExtensionITKFactory.cpp.in
               ${MITK_BINARY_DIR}/ToolGUIExtensionITKFactory.cpp.in COPYONLY)

# ---------------- Configure files -----------------

configure_file(mitkVersion.h.in ${MITK_BINARY_DIR}/mitkVersion.h)
configure_file(mitkConfig.h.in ${MITK_BINARY_DIR}/mitkConfig.h)

set(IPFUNC_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/Utilities/ipFunc)
set(UTILITIES_DIR ${CMAKE_CURRENT_SOURCE_DIR}/Utilities)

configure_file(mitkConfig.h.in ${MITK_BINARY_DIR}/mitkConfig.h)
configure_file(MITKConfig.cmake.in ${MITK_BINARY_DIR}/MITKConfig.cmake @ONLY)

write_basic_config_version_file(${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
  VERSION ${MITK_VERSION_STRING} COMPATIBILITY AnyNewerVersion)

#-----------------------------------------------------------------------------
# MITK Applications
#-----------------------------------------------------------------------------

# This must come after MITKConfig.h was generated, since applications
# might do a find_package(MITK REQUIRED).
add_subdirectory(Applications)

if(MSVC AND TARGET MitkWorkbench)
  set_directory_properties(PROPERTIES VS_STARTUP_PROJECT MitkWorkbench)
endif()

foreach(MITK_EXTENSION_DIR ${MITK_ABSOLUTE_EXTENSION_DIRS})
  set(MITK_APPLICATIONS_EXTENSION_DIR "${MITK_EXTENSION_DIR}/Applications")
  if(EXISTS "${MITK_APPLICATIONS_EXTENSION_DIR}/CMakeLists.txt")
    add_subdirectory("${MITK_APPLICATIONS_EXTENSION_DIR}" "Applications")
  endif()
endforeach()

#-----------------------------------------------------------------------------
# MITK Examples
#-----------------------------------------------------------------------------

if(MITK_BUILD_EXAMPLES)
  # This must come after MITKConfig.h was generated, since applications
  # might do a find_package(MITK REQUIRED).
  add_subdirectory(Examples)
endif()

#-----------------------------------------------------------------------------
# Print configuration summary
#-----------------------------------------------------------------------------

message("\n\n")
feature_summary(
  DESCRIPTION "------- FEATURE SUMMARY FOR ${PROJECT_NAME} -------"
  WHAT ALL
)
